arina-ielchiieva commented on a change in pull request #1345: DRILL-6494: Drill 
Plugins Handler
URL: https://github.com/apache/drill/pull/1345#discussion_r198860138
 
 

 ##########
 File path: 
exec/java-exec/src/main/java/org/apache/drill/exec/store/StoragePluginsHandler.java
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 @@ -0,0 +1,40 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.drill.exec.store;
+
+import org.apache.drill.common.logical.StoragePluginConfig;
+import org.apache.drill.exec.planner.logical.StoragePlugins;
+import org.apache.drill.exec.store.sys.PersistentStore;
+
+
+/**
+ * Storage plugins handler is an additional service for updating storage 
plugins configs from the file
+ */
+public interface StoragePluginsHandler {
+
+  /**
+   * Update incoming storage plugins configs from persistence store if 
present, otherwise bootstrap plugins configs.
+   * One of the params should be null, second shouldn't
+   *
+   * @param bootstrapPlugins bootstrap storage plugins, which are used in case 
of first Drill start up
+   * @param persistentStore the last storage plugins configs from persistence 
store
+   * @return all storage plugins, which should be loaded into persistence store
+   */
+  StoragePlugins updatePlugins(StoragePlugins bootstrapPlugins, 
PersistentStore<StoragePluginConfig> persistentStore);
 
 Review comment:
   As I have mentioned above, I would consider treating storage-plugins.conf as 
tool to update and add plugins. With this perspective we can rename method to 
loadPlugins or something else.

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